Apparatus for preventing the escape of gas from gas-generators.



PATENTED NOV. 21, 1905.

J. HOFMAEE,

E OF GAS FHOEE GAS GENERATORS.

APPLICATION FILED AUG. 14. 1905.

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APPARATUS FOR PREVENTING THE'ESCAPE OF GAS FROM GAS-GENERATORSSpecification of Letters Patent.

Application filed August 14, 1905. Serial No. 274,152.

Gas-G enerators and the Like During the Stokand gases. closing thestoke-hole opening in the head-.

ing Operation, of which the following is a specification.

The present invention relates, to improvements in apparatus forpreventing the escapeof gas from gas-generators and other furnacesthrough the stoke-hole during the stoking operation by admitting steaminto the stokehole during the time the lid or cover is opened for givingaccess to the interior of the generator. In apparatus of this kind thecontrivance for admitting and dispersing the steam, which consists in aperforated pipe.- coil, is located in a head-piece of the apparatus,secured in front of the stoke-hole to the Wall of the generator. Beingcontinually exposed to the heat and to the generated gases, thisperforated coil must frequently be cleaned to prevent the perforationsfrom being incrusted by tar and other products of combustion. Moreover,in the known apparatus the lid or fire-door, being so arranged as toslide over the stoke-hole and its operation being thus necessarilyattended with considerable friction, requires also to be frequentlycleaned in order to prevent the sliding surfaces from baking together.My present invention contemplates providing the said head-piece with asteam-coil carrier and a lid or cover, both of which are adapted to beswung on the stokehole or away from the stoke-hole.

By the term carrier I intend any suitable mechanical device by which thesteamcoil is supported in place on the stoke-hole and is made capableofmovement'to or away 7 from the stoke-hole, as desired.

In the carrier is arranged the contrivance for admitting steam, and thiscarrier is so combiued with the cockfor supplying said contrivance withsteam thaton being swung down upon the stoke-hole opening in thehead-piece it acts to open the steam-cock, and, on the other hand, whenit is swung back it acts to close the steam-cock and carry thesteam-admitting contrivance out of reach of-the heat The lid or coverserves for tightly piece during the gas-generating period. The

2, 4, and 5.

carrier and lid may be so arranged that each can be operatedindependently of the other;

but it is preferred to so combine them that either of them is swung downby the swinging back of the other, and in this case it is preferred toarrange the two to each other.

Patented Nov. 21,1905.

at right angles My preferred form of the improved appalines 3 3 of Fig.2. Fig. 4 is a plan showing the carrier for the steam-admittingcontrivance swung away from the stoke-hole. Fig. 5 is a section on thelines 5 5 of Fig. 2.

a is the stoke-hole in the generator, and b the head-piece secured tothe wall of the genorator or furnace over the stoke-hole and having init a stoke-hole opening corresponding to the stoke-hole in thegenerator. It carries two shafts c and (Z, arranged at right angles toeach other. The adjacent ends of these shafts are provided withbevel-wheels e and j, which are in gear with a common bevelwheel Fig. 2.

The carrier it, containing the 'contrivance for admitting steam into thestoke-hole, is. rigidly attached by arm it to the shaft 0;

It has a cup-shaped opening it, corresponding with the stoke-holeopening Z) in the conical extension 5 of the head-piece b. The cover orlid Z, which is to close the stoke-hole opening, is by arm Z attached tothe shaft cl, Figs. The steam-coil 2', provided with perforations a",directed toward the stokehole, is arranged inside a circular groove ofthe carrier 71. The end i of the coil z' is closed, and the other end 6opens into an axial bore 0' of the shaft- 0, to which at c is screwedthe plug m of the steam-cock, having the steamways m and m, Fig. 2, andwhich on the shaft being turned turns in the casting a.

The steam-pipe p is by a coupling-nut 0 connected with the steam-cock.The steam-coil c' is typical of any suitable steam-admittingcontrivance, and I desire to be understood as including any suchcontrivance Within my claims.

The operation of the apparatus is as follows: In Figs. 1, 2, and 3theseveralparts are shown in a position .to give access to the generatoror furnace-tnat is to say, the cover I of gas from gas generators andfurnaces duris moved away from the stoke-hole, and the carrier 7L,containing the contrivance Z for adi l 4 l mitting steam into thestoke-hole a, is down on the extension I) around the stoke-hole 1opening of the head-piece b.- The stoke-hole is free, and steam from thesteam-pipe 1.) en ters through the channel 91" of the cock-casing n,

the cock, and through the bore 0, provided in through the fineperforations i into the stokehole to prevent the escape of gas. When thestoking is finished, the lid or cover Z is turned down, and inconsequence of the described connection of the shafts a and (Z by theirbevel-wheels e and f with thecommon bevel wheel g this movement operatesto swing the carrier h away from its seat on the head-piece Z2. Figs. 4:and 5 show the lid Z in its closing position. By the same movement thesteam is turned off.

that I clai.m,'and desire to secure by Letters Patent of the UnitedStates, is v 1. In an apparatus for preventing the escape of gas fromgas generators and furnaces during the stoking and like operations, thecombination of a lid orcover adapted to close the stoke-hole opening, anannular perforated steam-coil adapted to discharge into the stokehole, acarrier for said coil, and means for moving the lid and the carrier toand away from the stoke-hole opening, all substantially as set forth.

2. In an apparatus for preventing the escape of gas from gas generatorsand furnaces during the stoking and the like operations, the combinationof a lid or cover adapted to close the stoke-hole opening, an annularperforated steam-pipe coil adapted to discharge into the stoke-hole, acarrier for said coil movable to and from the stoke-hole, and meansconnected with the carrier and the lid arranged and operating'to moveone of the same toward the stoke-hole opening when the other is beingmoved away from the said opening, all substantially as set forth.

3. In apparatus for preventing the escape ing the stohing and the likeoperations, an annular pnrforatmil steam-pipe coil adapted to dischargeinto the stokeholc opening, a carrier for said coil movable to and fromthe stoke-hole opening, means for connecting the coil to .a source ofsteam-surmly, a cock for h h I 2 d 5 controlling the steam-supply,and'connections t roug tie ways m an m of the plug of whereby the cockis automatically turned on I or off according as the carrier is moved toor the shaft 0, into the coil 2, and from there Q from the stoke-hole,all substantially as set forth.

4:. In an apparatus for preventing the es cape of gas from gasgenerators and furnaces during the stoking and like operations, thecombination of a lid adapted to close the stokehole opening, an annularperforated steampipe coil arranged to discharge into the stokehole,shafts to which said lid and carrier are respectively secured, supportedin bearings at right angles to each other, and beveled gearingconnecting the adjoining ends of said shafts, all substantially as setforth.

5. In an apparatus for preventing the escape of gas from gas generatorsand furnaces during the stoking and like operations, comprising a lidadapted to close the stoke-hole opening, a carrier allowing access tothe stokehole, a perforated steam-pipe coil arranged in said carrier andsupporting-shafts for said carrier and lid, connected by beveled gearingwhereby when the lid is swung onto its seat over the stoke-hole opening,the carrier is swung away from thestoke-hole, and vice versa, thecombination with the shaft of the Steam-coil carrier and steani-supplyconnections for the coil, of a cock for controlling said steam-Eu ppl'y,adapted to be turned on and off by the movement of said shaft, allsubstantially'as set forth.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

Jus'rus HOFMANN.

\Vitnesses:

ERNs'r KATZ,

A. W. MAX.

